The answer is d, articles of confederation
The New Life Movement (Chinese: 新生活運動; pinyin: Xīn Shēnghuó yùndòng) was a government-led civic movement in 1930s China to promote cultural reform and Neo-Confucian social morality and to ultimately unite China under a centralised ideology following the emergence of ideological challenges to the status quo.
D: completed a citizenship process
After serving in the military, even for 5 years, you still have to apply for naturalization and get approved in order to naturalize through military work. You must also meet a lot of requirements beyond your military service to be eligible.
There is no citizenship contest.
Being born in the United States automatically makes you a citizen, you do not need to be naturalized.
D is the only answer that upon completion makes you a naturalized citizen because you have gone through the process of naturalization.